642 J frame issue


November 26, 2012, 10:12 PM
Today I went to the range I had my 13-4 on my hip and my 642 in my pocket. I figured since I realistically have my 642 in my pocket quite often I would start from there. I had already loaded it with the range ammo I had brought which was Federal 130 fmj. I pulled the gun and fired and on the third shot the trigger didnt return. I tried to release the cylinder and it wouldnt. I shot a few other guns but then my concern overcome me. On the hood of my Jeep I took apart my 642 only to find out the small spring in the trigger that holds the arm that rotates the cylinder had come loose. While trying to get the cylinder to release I noticed the pin that holds the hammer in rolled down the hood. Of course the range is a sand pit and even though I searched I never found it. I came home looking for diagram to see what is missing or if something broke and other than the hammer pin I think its all there. Has anyone else ever had this happen? Does anyone have a parts diagram? I realize this probably wasnt an ammo issue but the only other issue I have ever had with a 642 was shooting 158 LSWCHP+p and it would shake the lead out to a point the cylinder wouldnt rotate.

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November 26, 2012, 10:26 PM
If the "pin that holds the hammer in" rolled down the hood, you have bigger problems then losing it.

The hammer pin in a S&W is a steel stud pressed in the frame with a huge hydraulic press.
If it got away from you, it is broke clear off the frame stud.

You need to send the gun back to S&W for factory repair.

It's not a DIY job to replace it.


November 26, 2012, 10:35 PM
Im sorry its the pin that holds the firing pin rather than the pin that holds the hammer.

Old Fuff
November 26, 2012, 10:47 PM
If this is one of the newer models with MIM internal lockwork, an internal safety and the firing pin installed in the frame rather then on the hammer?

If so, go to this link: http://www.thehighroad.org/showthread.php?t=397027k:

Jim K
November 26, 2012, 11:00 PM
All I can say is that I have enough trouble with losing parts when I take guns apart on my bench; I sure wouldn't do it on a Jeep hood. :o

No offense, but the ease with which you took that gun apart suggests you might have done it before and failed to install the hand spring properly. It might be possible for that spring to "come loose" but it seems more likely it and the hand were not properly installed in the first place. Even without spring tension, the hand might have turned the cylinder for a couple of shots.


November 27, 2012, 09:46 AM
That thread certainly makes it easy to see. I agree my Jeep was not the best place to take the gun down especially the fact that it was equivalent of being at the beach minus the water.

November 27, 2012, 02:34 PM
camjr, I'm sorry but this is one of the funniest threads I have read in a long time. Maybe it's because I have a Jeep, a 642 and used to live in FL (beach).
Sorry. :D
And a perverted sense of humor, sorry for your misfortune.

November 28, 2012, 09:50 AM
As advised over on TFL send it back to S&W.

BTW, that lead shaking out is called "bullet jump." Search on it.

November 28, 2012, 05:41 PM
Glad I could entertain you DAdams. Moxie thank you I dont think I explained it properly. What I meant was the pin holding the firing pin. I called S&W last night and ordered a pin as well as all of the small springs to freshen things while I am in there.

November 28, 2012, 08:00 PM
All's well that ends well.

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